There are a couple of threads here about swapping in a Kawasaki ZX7 rear unit which has comp/rebound adj. One of the threads is mine detailing this swap on my 1996 Thunderbird. READ THEM CAREFULLY!! critical to find 1997(ish) Kaw ZX9 unit with remote nitrogen unit on a hose- NOT the one attached to the unit that sticks out at an angle- use that one and you'll be busy with the sawzall! The stock Triumph unit is NOT rebuildable, but parts for the Kaw unit are available, (new bladder for reservoir, etc) are from RACETECH. Aftermarket units- new- are avail. from a number of sources, but $$$$$$$!!!!. If I remember correctly, I paid about $50, (USD), for a used Kaw shock, $15 for some nice alloy "dog bones" which polished up nicely, (drag racers use these to adj. ride height- the Kaw shock is longer and will raise the rear a lot- about 2 inches- the 3 holes in the alloy dog bones will allow lowering rear to stock ride height without affecting susp. geometry), a new bladder from RaceTech and $20 to the guy at the local dirt bike shop to re-fill the nitrogen reservoir. Estimating that the Thunderbird and the ZX9 were similar weight, I used the Kaw spring. Total was around $100. SETTING "SAG" PROPERLY IS IMPORTANT!!! Result- VERY much, all 'round improvement! Comp/rebound adj. done easily/quickly with screwdriver for pillion, (my daughter is about 125lb/50kg) is MUCH happier! Look for thread- "Swap for ZX7?" early experiment- ZX7 DOES NOT WORK! or "Swap for ZX9" for later, successful swap
